I prepared an MFJ then split into 2 single returns. 

Results:

W-2 wages - which I designated as TP - were 50% of the correct wages on the split Taxpayer return.

Rental properties for the Spouse were carried into the split Taxpayer return.

Partnership K-1 designated as Spouse was carried into the split Taxpayer return.

Why did this happen and what did I do wrong?